研究带粘性项的受迫弱阻尼KdV方程,运用能量方程和正交分解相结合的方法,得到了Bourgain空间下解的正则性,结果表明在L^2(R)空间中存在渐近光滑的全局吸引子.
The existence of the global attractor of a weakly damped, forced Korteweg-de-Vries equation in the phase space L^2 (R) is proved. An optimal asymptotic smoothing effect of the equation is also shown, namely, that for forces in L^2( R), the global attractor in the phase space L^2(R) is actually a compact set in H^3 (R). The energy equation method is used in conjunction with a suitable splitting of the solutions. The dispersive regulation properties of the equation in the context of Bourgain spaces are extensively exploited.